查询词典 nitrogen

The soil had great population of bacteria, but the fungi quantity is excessive which may cause the multiplication of germina. As base-fertilizer, the slowed-release fatty had positive influence on soil fast-effect nutrient, but the organism quality is small, the soil enzyme activity with microorganism activity both low. Soil EC, total nitrogen, available nitrogen, available phosphorus and organic matters were significantly negative related to the soil pH. Soil total nitrogen was positive significantly related to soil available nutrient.

土壤中pH值与土壤EC值、土壤全氮、速效氮、速效磷、有机质含量呈显著负相关，土壤全氮含量与土壤速效养分含量有极显著正相关关系，而且土壤有机质含量与土壤速效养分之间也有相互促进的作用，所以土壤养分的平衡效果非常重要，有机肥处理后土壤养分全面，肥力较高。

In nitrogen and phosphorus mixed pollution water, in thewater that the concentration of nitrogen is 21mg/L and the concentration of phosphorus is155mg/L, Eichharnia crassipes and Hosta ventricosa can grow normally. In the water that theconcentration of nitrogen is 210mg/L and the concentration of phosphorus is 31mg/L, thephysiological indicators of Hosta ventricosa is good but the physiological indicators of Eichhomiacrassipes is worse than the other treatment and the root of Eichharnia crassipes was rot when itwas planted in the 7th day, and on the 11th day the plants wilt symptoms, it noted that thistreatment affected the growth of Eichharnia crassipes.

在氮磷复合污染的水体中，凤眼莲和紫萼玉簪在氮浓度21mg／L，磷浓度155mg／L水体中都能够正常生长，而在氮浓度210mg／L，磷浓度31mg／L水体中，紫萼玉簪生长正常，而凤眼莲的生理指标比在其它处理中要差，并且凤眼莲在种植的第7天出现根部腐烂，11天时植株枯萎的症状，说明氮浓度210mg／L，磷浓度31mg／L复合污染在一定程度上影响植物的正常生长。

The results showed that: the influence of the aquaculture process on aquaculture water determined by type of aquaculture; the influence of aquaculture process on the water temperature, salinity and pH value were not wide.the descent of pH value was related to feed coefficients ; the dissolve oxygen of water in outfall was lower than the water in infall,but the concentration still maintained at the saturation level, is mainly affected by density of aquaculture ,rate of feed and artificial measures of increasing oxygen ;the major form of inorganic nitrogen was nitrate-N;the concentration of inorganic nitrogen and the organic matter tended to increase ,but the ammonium to decline ,this was relation with density of aquaculture ,rate of feed and variation of the different inorganic nitrogen form ; concentration of phosphate-P was low in outfall of pond , related with phosphate-P precipitating, as flowing water speed slowly in outfall;This phenomenon that the total number of bacteria and coli form group of water in outfall was lower than the water in infall , this caused by measures of sterilization and disinfection .

结果表明：养殖过程对水体影响与养殖类型有关。养殖过程对水体的水温、盐度和pH影响不大； pH下降与饲料系数高有关；溶解氧含量排水口比进水口低，但仍维持在饱和状态，与养殖密度、投饵率和人工增氧有关。硝酸氮是无机氮的主要存在形式，无机氮和有机物含量有升高趋势，氨氮有下降的趋势，与养殖密度，投饵率和各种无机氮之间的相互转换有关。活性磷酸盐含量在排水口含量下降，与排水口流水速度慢，磷酸盐沉淀有关。生物指标细菌总数和大肠杆菌总数在排水口比进水口低现象普遍存在，这与养殖场杀菌消毒等措施有关。

A pot experiment with twenty-three open-pollinated Liriodendron chinense families from Liping of Guizhou at two nitrogen levels was conducted to investigate family variation and inheritance of nitrogen absorption and utilization efficiency related to nitrogen supply.

选用来自贵州黎平马褂木优良种源的23个优树自由授粉家系，设置低N和高N2种N素水平的盆栽试验，以研究马褂木N素吸收和利用效率的家系遗传变异及N素水平的影响。

The pathogen grew well on the media using glucose, sucrose, fructose, maltose, rhamnose or soluble starch as carbon sources. Galactose, xylose, mannite or sorbose was not beneficial for the growth of the pathogen, however. The media with only organic or inorganic nitrogen sources were not suitable for the pathogen growth although organic nitrogen sources were better than inorganic nitrogen sources. The pathogen could also infect Allium cepa L., A. fistulosum L. and A. odorum L. under artificial inoculation conditions.

在碳源中，以对葡萄糖、蔗糖、果糖、麦芽糖、鼠李糖和淀粉的利用为佳，而半乳糖、山梨糖、甘露醇、木糖和菊糖不利病菌的生长；有机氮源优于无机氮源，但单独应用有机或无机氮作为营养均不适于此病菌的生长；在人工接种条件下，病菌可侵染葱、洋葱和韭等葱属植物。

Nitrogen narcosis (or nitrogen euphoria or raptures of the deep):Effects of breathing nitrogen under increased pressure.

氮麻醉：在压力增高的条件下吸入氮气所产生的生理效应。

Nitrogen narcosis (or nitrogen euphoria or rapture s of the deep):Effects of breathing nitrogen under increased pressure.

氮麻醉：在压力增高的条件下吸入氮气所产生的生理效应。

Effects of nitrogen-degrading microbes on biological characteristics of the growth of water hyacinth, the contents of nitrogen and phosphorus in water, and the dynamic change of microorganism in water were analysed by the elimination of nitrite, organic nitrogen and phosphor in water by nitrobacteria and denitrobacteria.

利用硝化细菌与反硝化细菌对水体中亚硝酸盐、有机氮、磷等营养物质的消除作用来分析降氮灵菌剂对水葫芦生长的生物学特性、水体中氮磷含量变化以及水体中微生物消长动态的影响。

The nitrogen balance experiments show that most of nitrogen is removed as gas, so it achieves the aim of nitrogen removal.

同时，通过氮平衡实验反映出系统对氮的去除大部分是气态形式去除的，达到真正的脱氮目的。

The contents of organic matter, total nitrogen, phosphorus, iron, manganese, copper, zinc can be increased, and the contents of hydrolizable nitrogen and their forms , Fe-P, Al-P, Ca〓-P, all organic P forms, exchangeable and organic iron, manganese, copper, zinc are increased obviously in long-term application organic manure soil. Not only the contents of soil readily oxidizable carbon, humic acid, fuluic acid, and HA/FA value are increased and Kos value decreased but also the available nitrogen, phosphorus, iron, manganese, copper, zinc are kept more high level in the organic manure soils. Long-term mulching straw has similar role with organic manure for soil nutrient except for decreasing total phosphorus, available P, N and Ca〓-P, but its fertilizer efficiency is not better than organic manure.

有机肥还具有提高土壤易氧化碳和松结态腐殖质含量，降低kos值，提高土壤HA、FA含量及其比值的作用，使土壤中有效态氮、磷、铁、锰、铜和锌含量处于中上等水平；长期秸秆还田除了不增加土壤全磷、有效氮和磷等外，对其他养分的作用效果与有机肥相似，但其肥效不如有机肥；长期氮磷化肥单施，土壤全氮和磷增加，有机质、铁、锰、铜和锌含量下降，易氧化碳、松结态腐殖质、HA和FA含量、kos和HA/FA值下降；长期不施肥土壤有机质、全氮等养分处于消耗状态。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。